Air-feeding device



J. Y. KING.

AIR FEEDING DEVICE.

APPLICATION FILED NOV. 19, I919.

1,365,697. Patented Jan. 18, 1921.

I111 IIIIIIIIII F f Iva/@7122? Jim fin UNITED STATES PATENT OFFICE.

JOHN Y. KING, OF LANSDOVVNE, PENNSYLVANIA.

AIR-FEEDING DEVICE.

Application filed November 19. 1919.

Q all w lwm it may ounce m Be it known that 1, JOHN Y. KING, a citizenof the United States, residing at Lansdowne, in the county of Delawareand State of Pennsylvania, have invented new and useful Improvements inAir-Feeding Devices, of which the following is a. specification. 7

My invention relates to a new and useful improvement in air feedingdevices and has for its object to provide an enceedingly simple andeffective device of this description which may be readily applied to thedoor of a coal burning furnace which when so applied will project astream of highly heated air over the fire bed in such manner as tointermingle and combine with the gases of ombustion causing them to burnwith an intense heat and thus prevent the e cape of unburned carbon inthe form of smoke or soot.

A further object of my invention is to provide for the regulation of theadmission of air to the device by gradually decreasing the passagesthrough which said air llows To ircr ase the speed of said flow.

ith these ends in view, thus invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

in order that those skilled in the art to which this inventionappertains. may understand how to make and use the same, 1 will describeits construction in detail, referring by numerals to the accompanyingdrawing forming a part of this application, in which Figure l, is abroken away section of a portion of a furnace showing my improved airfeeding device applied thereto the latter being partly broken away andsectioned to clearly show the construction thereof.

Fig. 2, is a face view of a portion of the furnace door showing myimprovement applied thereto.

F ig. 3, is a section at the line 33 of Fig. 2 of the front wall of theair intake and regulator.

F ig. 4, is a detail view of nozzles having different size holes thereinfor the projection of heated air.

In carrying out my invention as here embodied, 1 represents the body ofthe device having its inner end turned upward at an angle and on thisbody is formed an en- Specification of Letters Patent.

Patented Jan. 18, 1921.

Serial No. 339,178.

lar zeincnt or shoulder 2 which is threaded for the reception of nut 3.

i represents an air intake which is formed with the enlargement 2 andthis intake is provided with a front wall 5 through which latter isformed the air inlet (5.

i represents a regulator having the annular Hang a hich it around theouter edge of the intake 1- aud is held in place by the -ct screw 9passing through the concentric slot 10 and threaded into the wall 5.This regulator has an opening 11 which registers with the air inlet 6 sothat when the regulator turned upon its axis in one direction or theother it will increase or decrease the capacity o the inlet 6 and whenthe Iapacity of this inlet is properly adj usted the regulator may besecurely held in this po ition by tightening: screw 9 as will be readilyunderstood.

[2 represents the nozzle the body of which is threaded so as to bescrewed into a threaded opening in the inner end of the body 1 and thisnozzle has a flange in the form of a nut for the application of a.wrench Whereby it may be readily screwed into the threaded opening inthe end of the body or removed therefrom. and through this nozzle iformed the hole 13 for projecting the hcatel air into the gases ofcombustion.

The device is readily applied to the door H of a furnace by forming: ahole through said door of sufficient size to permit the passage of theenlargement 2 of the body passing the body through said hole and runninathe nut 3 upon the enlargement until said nut bears upon the inner faceof the door with sufficient pressure to clamp the device in place and asthe intake 4 is in the form of a funnel its flared walls would come incontact with the outer portion of the door or the regulator 15 carriedby said door and serves as the outer bearing for clamping the device.

When my improved air feeding device is thus applied to a furnace thedoor 14 may be opened for feeding coal to the furnace without in any wayinterfering with this operation. and as it projects to a relativelyconsiderable distance in the furnace over the tire bed it will becomeheated and the air passing through the inlet 6 will absorb this heat andthereby be expanded, this heating and expanding gradually decreasing asthe air flows inward until it is projected in a highly heated state inthe products of combustion intermingling with these gases and supplyingthe proper amount of oxygen to bring about a high degree of combustion,thus intensifying the heat of said combustion and preventing the escapeof the free carbon in the form of smoke or soot.

In practice I have found the action of this device is similar to theaction of a blow pipe and produces large economy in the consumption offuel for a given amount of heat.

By making the intake in the form of a funnel and gradually reducing thepassage in the body a large volume of air is gradually confined andexpanded as it passes to the nozzle thus increasing the pressure thereonand causing it to be projected from the nozzle with considerable force.

In order that different size outlets may be provided for the device andapplied thereto without removing the device from the furnace door Iutilize a set of nozzles 12 each having a different sized hole 16therethrough as shown in Fig. 3 by the use of which the outlet from thedevice may be regulated, and this is essential for the reason that thechange of fuel or the conditions in the drafts of the furnace require adifferent inflow of heated air, and while this inflow may be determinedmore or less by the regulator 7 the essential point of regulation is atthe nozzle.

In order that the inflow of air may not inadvertently be entirely shutoff I form a central hole 17 in the wall 5 and a corresponding centralhole 18 in the regulator 7 the relation of which is not affected by therevolving of the regulator.

Of course I do not wish to be limited to the exact details ofconstruction as herein shown as these may be varied within the limits ofthe appended claims without departing from the spirit of my invention.

Having thus fully described my invention, What I claim as new and usefulis 2- 1. In a device of the character described,

a body having a straight section and an upturned inner end, said bodyhaving a passageway therethrough gradually decreasing in cross sectiontoward its inner end, a threaded enlargement formed upon the body, a nutadapted to run upon said enlargement, a funnel shaped intake formed withthe enlargement, a wall inclosing the front of said intake, said wallhaving an inlet opening therethrough, a regulator mounted upon theintake, a flange formed with said regulator for centering it upon theintake, said regulator having an opening therethrough for registeringwith the opening in said wall, and means for holding the regulator inany adjustment upon the intake.

2. In a device of the character described the combination of a bodyhaving an upturned end, a gradually decreasing passageway therethrough,a funnel shaped intake,

means for regulating the flow of air through I said intake, a nozzle forregulating the outflow of air from the passageway, and means forattaching the device to a door of a furnace.

3. In a device of the character described, a body having a straightsection and an upturned inner end, said body having a passagewaytherethrough gradually decreasing in cross section toward its inner end,a threaded enlargement formed upon the body, a nut adapted to run uponsaid enlargement, a funnel shaped intake formed with the enlargement, awall inclosing the front of said intake, said wall having an inletopening therethrough, a regulator mounted upon the intake, a flangeformed with said regulator for centering it upon the intake, saidregulator having an opening therethrough for registering with theopening in said wall, means for holding the regulater in any adjustmentupon the intake, and

a nozzle detachably secured to the inner end of the body.

In testimony whereof, I have hereunto afiixed my signature.

JOHN Y. KING.

